Ecological Assessment of Storm Impacts

Data Collection

Nicosulfuron

Basic Information

Synonym(s): 2-(((((4,6-dimethoxy-2-pyrimidinyl)amino)carbonyl)amino)sulfonyl)-N,N-dimethyl-3-pyridinecarboxamide; Accent; Accent DF; DPX-V9360; DPX-V9636; HU-195; Nicosulfuron; SL-950
Formula: C₁₅H₁₈N₆O₆S
Molecular Weight: 410.404
Melting Point (°C): 141 - 144
Contaminant Type: Nicosulfuron is an herbicide.

Solubility (in water)

• Solubility: 0.04 g/100g ^h
  Temperature (°C): 25
  pH Value: 5
  

• Solubility: 1.2 g/100g ^h
  Temperature (°C): 25
  pH Value: 7
  

• Solubility: 3.9 g/100g ^h
  Temperature (°C): 25
  pH Value: 9
  

Half-Life (in soil unless otherwise noted)

• t1/2: 26 days ^h
  Environment: in silt clay
  

• t1/2: 60-67 days ^h
  Environment: by photolysis
  Formulation: Accent
  

• t1/2: 3 weeks ^h
  pH Value: "6.5, 7"
  Environment: field dissipation
  Formulation: Accent
  

• t1/2: 7 weeks ^h
  pH Value: 7.4
  Environment: field dissipation
  Formulation: Accent
  

• t1/2: 2 weeks ^h
  pH Value: 8
  Environment: field dissipation
  Formulation: Accent
  

Toxicity Effects

• Organism Type: Birds ^ah
  Common Name: bobwhite quail
  Scientific Name: Colinus virginianus
  Toxicity: >2250 mg/kg
  Test: LD50
  

• Organism Type: Birds ^g
  Common Name: bobwhite quail
  Scientific Name: Colinus virginianus
  Toxicity: >2250 mg/kg
  Test: LD50
  

• Organism Type: Birds ^g
  Common Name: bobwhite quail
  Scientific Name: Colinus virginianus
  Toxicity: >2250 mg/kg
  Test: LD50
  

• Organism Type: Birds ^g
  Common Name: bobwhite quail
  Scientific Name: Colinus virginianus
  Toxicity: >2250 mg/kg
  Test: LD50
  

• Organism Type: Crustaceans ^ah
  Common Name: Daphnia
  Scientific Name: Daphnia magna
  Toxicity: >1000 mg/l
  Test: 48h EC50
  

• Organism Type: Fish ^ah
  Common Name: Bluegill
  Scientific Name: Lepomis macrochirus
  Toxicity: >1000 mg/l
  Test: 96h LC50
  

• Organism Type: Fish ^ah
  Common Name: Rainbow trout
  Scientific Name: Oncorhynchus mykiss
  Toxicity: >1000 mg/l
  Test: 96h LC50
  

• Organism Type: Mammals ^ah
  Common Name: Rat
  Scientific Name: Muridae (Family)
  Toxicity: >5000 mg/kg
  Test: LD50
  

• Organism Type: Mammals ^g
  Common Name: Rat
  Scientific Name: Muridae (Family)
  Toxicity: >5000 mg/kg bw
  Test: LD50
  

• Organism Type: Mammals ^g
  Common Name: Rat
  Scientific Name: Muridae (Family)
  Toxicity: >5000 mg/kg bw
  Test: LD50
  

Octanol-Water Partition Coefficients

• Log Kow: 0.44 ^h
  Formulation: at pH 5
  Notes: Source did not specify type of partition coeffecient or if value was the log

• Log Kow: 0.017 ^h
  Formulation: at pH 7
  Notes: Source did not specify type of partition coeffecient or if value was the log

• Log Kow: 0.01 ^h
  Formulation: at pH 9
  Notes: Source did not specify type of partition coeffecient or if value was the log

Work Cited